src/mesa/main/shaderobj.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2004-2007  Brian Paul   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef SHADEROBJ_H
  27 #define SHADEROBJ_H
  28
  29
  30 #include "main/compiler.h"
  31 #include "main/glheader.h"
  32 #include "main/mtypes.h"
  33 #include "program/ir_to_mesa.h"
  34
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40
  41 /**
  42  * Internal functions
  43  */
  44
  45 extern void
  46 _mesa_init_shader_state(struct gl_context * ctx);
  47
  48 extern void
  49 _mesa_free_shader_state(struct gl_context *ctx);
  50
  51
  52 extern void
  53 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  54                        struct gl_shader *sh);
  55
  56 extern struct gl_shader *
  57 _mesa_lookup_shader(struct gl_context *ctx, GLuint name);
  58
  59 extern struct gl_shader *
  60 _mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller);
  61
  62
  63
  64 extern void
  65 _mesa_reference_shader_program_(struct gl_context *ctx,
  66                                struct gl_shader_program **ptr,
  67                                struct gl_shader_program *shProg);
  68
  69 static inline void
  70 _mesa_reference_shader_program(struct gl_context *ctx,
  71                                struct gl_shader_program **ptr,
  72                                struct gl_shader_program *shProg)
  73 {
  74    if (*ptr != shProg)
  75       _mesa_reference_shader_program_(ctx, ptr, shProg);
  76 }
  77
  78
  79 extern void
  80 _mesa_init_shader(struct gl_context *ctx, struct gl_shader *shader);
  81
  82 extern struct gl_shader *
  83 _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type);
  84
  85 extern void
  86 _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh);
  87
  88 extern struct gl_shader_program *
  89 _mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);
  90
  91 extern struct gl_shader_program *
  92 _mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
  93                                 const char *caller);
  94
  95 extern struct gl_shader_program *
  96 _mesa_new_shader_program(GLuint name);
  97
  98 extern void
  99 _mesa_clear_shader_program_data(struct gl_shader_program *shProg);
 100
 101 extern void
 102 _mesa_free_shader_program_data(struct gl_context *ctx,
 103                                struct gl_shader_program *shProg);
 104
 105
 106
 107 extern void
 108 _mesa_init_shader_object_functions(struct dd_function_table *driver);
 109
 110 static inline gl_shader_stage
 111 _mesa_shader_enum_to_shader_stage(GLenum v)
 112 {
 113    switch (v) {
 114    case GL_VERTEX_SHADER:
 115       return MESA_SHADER_VERTEX;
 116    case GL_FRAGMENT_SHADER:
 117       return MESA_SHADER_FRAGMENT;
 118    case GL_GEOMETRY_SHADER:
 119       return MESA_SHADER_GEOMETRY;
 120    case GL_TESS_CONTROL_SHADER:
 121       return MESA_SHADER_TESS_CTRL;
 122    case GL_TESS_EVALUATION_SHADER:
 123       return MESA_SHADER_TESS_EVAL;
 124    case GL_COMPUTE_SHADER:
 125       return MESA_SHADER_COMPUTE;
 126    default:
 127       assert(0 && "bad value in _mesa_shader_enum_to_shader_stage()");
 128       return MESA_SHADER_VERTEX;
 129    }
 130 }
 131
 132 /* 8 bytes + another underscore */
 133 #define MESA_SUBROUTINE_PREFIX_LEN 9
 134 static inline const char *
 135 _mesa_shader_stage_to_subroutine_prefix(gl_shader_stage stage)
 136 {
 137   switch (stage) {
 138   case MESA_SHADER_VERTEX:
 139     return "__subu_v";
 140   case MESA_SHADER_GEOMETRY:
 141     return "__subu_g";
 142   case MESA_SHADER_FRAGMENT:
 143     return "__subu_f";
 144   case MESA_SHADER_COMPUTE:
 145     return "__subu_c";
 146   case MESA_SHADER_TESS_CTRL:
 147     return "__subu_t";
 148   case MESA_SHADER_TESS_EVAL:
 149     return "__subu_e";
 150   default:
 151     return NULL;
 152   }
 153 }
 154
 155 static inline gl_shader_stage
 156 _mesa_shader_stage_from_subroutine_uniform(GLenum subuniform)
 157 {
 158    switch (subuniform) {
 159    default:
 160    case GL_VERTEX_SUBROUTINE_UNIFORM:
 161       return MESA_SHADER_VERTEX;
 162    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 163       return MESA_SHADER_GEOMETRY;
 164    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 165       return MESA_SHADER_FRAGMENT;
 166    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 167       return MESA_SHADER_COMPUTE;
 168    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 169       return MESA_SHADER_TESS_CTRL;
 170    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 171       return MESA_SHADER_TESS_EVAL;
 172    }
 173 }
 174
 175 static inline gl_shader_stage
 176 _mesa_shader_stage_from_subroutine(GLenum subroutine)
 177 {
 178    switch (subroutine) {
 179    case GL_VERTEX_SUBROUTINE:
 180       return MESA_SHADER_VERTEX;
 181    case GL_GEOMETRY_SUBROUTINE:
 182       return MESA_SHADER_GEOMETRY;
 183    case GL_FRAGMENT_SUBROUTINE:
 184       return MESA_SHADER_FRAGMENT;
 185    case GL_COMPUTE_SUBROUTINE:
 186       return MESA_SHADER_COMPUTE;
 187    case GL_TESS_CONTROL_SUBROUTINE:
 188       return MESA_SHADER_TESS_CTRL;
 189    case GL_TESS_EVALUATION_SUBROUTINE:
 190       return MESA_SHADER_TESS_EVAL;
 191    }
 192 }
 193
 194 static inline GLenum
 195 _mesa_shader_stage_to_subroutine(gl_shader_stage stage)
 196 {
 197    switch (stage) {
 198    default:
 199    case MESA_SHADER_VERTEX:
 200       return GL_VERTEX_SUBROUTINE;
 201    case MESA_SHADER_GEOMETRY:
 202       return GL_GEOMETRY_SUBROUTINE;
 203    case MESA_SHADER_FRAGMENT:
 204       return GL_FRAGMENT_SUBROUTINE;
 205    case MESA_SHADER_COMPUTE:
 206       return GL_COMPUTE_SUBROUTINE;
 207    case MESA_SHADER_TESS_CTRL:
 208       return GL_TESS_CONTROL_SUBROUTINE;
 209    case MESA_SHADER_TESS_EVAL:
 210       return GL_TESS_EVALUATION_SUBROUTINE;
 211    }
 212 }
 213
 214 static inline GLenum
 215 _mesa_shader_stage_to_subroutine_uniform(gl_shader_stage stage)
 216 {
 217    switch (stage) {
 218    default:
 219    case MESA_SHADER_VERTEX:
 220       return GL_VERTEX_SUBROUTINE_UNIFORM;
 221    case MESA_SHADER_GEOMETRY:
 222       return GL_GEOMETRY_SUBROUTINE_UNIFORM;
 223    case MESA_SHADER_FRAGMENT:
 224       return GL_FRAGMENT_SUBROUTINE_UNIFORM;
 225    case MESA_SHADER_COMPUTE:
 226       return GL_COMPUTE_SUBROUTINE_UNIFORM;
 227    case MESA_SHADER_TESS_CTRL:
 228       return GL_TESS_CONTROL_SUBROUTINE_UNIFORM;
 229    case MESA_SHADER_TESS_EVAL:
 230       return GL_TESS_EVALUATION_SUBROUTINE_UNIFORM;
 231    }
 232 }
 233
 234 #ifdef __cplusplus
 235 }
 236 #endif
 237
 238 #endif /* SHADEROBJ_H */